linux-kernel - [net-next PATCH v2 2/4] netdev: make napi_schedule return bool on NAPI successful schedule

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Message-Id: <20231003145150.2498-2-ansuelsmth@gmail.com>
Date:   Tue,  3 Oct 2023 16:51:48 +0200
From:   Christian Marangi <ansuelsmth@...il.com>
To:     Jason Gunthorpe <jgg@...pe.ca>, Leon Romanovsky <leon@...nel.org>,
        Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
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Subject: [net-next PATCH v2 2/4] netdev: make napi_schedule return bool on NAPI successful schedule

Change napi_schedule to return a bool on NAPI successful schedule.
This might be useful for some driver to do additional steps after a
NAPI has been scheduled.

Suggested-by: Eric Dumazet <edumazet@...gle.com>
Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
Reviewed-by: Eric Dumazet <edumazet@...gle.com>
---
Changes v2:
- Add Suggested-by tag
- Add Reviewed-by tag
---
 include/linux/netdevice.h | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 7e520c14eb8c..2bead8e2a14d 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -490,11 +490,18 @@ bool napi_schedule_prep(struct napi_struct *n);
  *
  * Schedule NAPI poll routine to be called if it is not already
  * running.
+ * Return true if we schedule a NAPI or false if not.
+ * Refer to napi_schedule_prep() for additional reason on why
+ * a NAPI might not be scheduled.
  */
-static inline void napi_schedule(struct napi_struct *n)
+static inline bool napi_schedule(struct napi_struct *n)
 {
-	if (napi_schedule_prep(n))
+	if (napi_schedule_prep(n)) {
 		__napi_schedule(n);
+		return true;
+	}
+
+	return false;
 }
 
 /**
-- 
2.40.1